Most motherboards have multiple USB hubs integrated into the board. For example, the ports on the back of the computer go through one hub. Then the case's front panel USB ports likely go through another controller. If you have both USB 2.0 and USB 3.0, they might use different controllers.
If your keyboard or monitor, or perhaps an external drive supports additional USB ports, they might appear as additional controllers.
So what you are seeing is normal. I would not worry about it unless you look in the back of your computer and you see some device you don't recognize. And if that happens, it is time to get a different dog.